Markovian model for reliability assessment of microgrids considering load transfer restriction

Al-Muhaini, Mohammad; Al-Sakkaf, A.

doi:10.3906/elk-1609-137

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…Markov chains are used to model a sequence of discrete or continuous random variables that correspond to a set of system states [28]. A state transition matrix can mathematically represent the states and transition probabilities.…”

Section: Markov Reliability Modelmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Fang,

Xu,

Xia

et al. 2022

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The conventional port distribution power system is being disrupted by increasing distributed generation (DG) levels based on integrated energy. Different new energy resources combine with conventional generation and energy storage to improve the reliability of the systems. Reliability assessment is one of the key indicators to measure the impact of the distributed generation units based on integrated energy. In this work, an analytical method to investigate the impacts of using solar, wind, energy storage system (ESS), combined cooling, heating and power (CCHP) system and commercial power on the reliability of the port distribution power system is improved, where the stochastic characteristics models of the major components of the new energy DG resources are based on Markov chain for assessment. The improved method is implemented on the IEEE 34 Node Test Feeder distribution power system to establish that new energy resources can be utilized to improve the reliability of the power system. The results obtained from the case studies have demonstrated efficient and robust performance. Moreover, the impacts of integrating DG units into the conventional port power system at proper locations and with appropriate capacities are analyzed in detail.

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Section: Markov Reliability Modelmentioning

confidence: 99%

Bulletin of the Polish Academy of Sciences: Technical Sciences

Fang,

Xu,

Xia

et al. 2022

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“…The reliability evaluation for both distribution system which has low voltage versus the transmission system which has high voltage presented in [11], [12]. Almuhamaini and Al-Sakkaf [13], proposed the reliability evaluation of distribution system in microgrid without installed distributed generators and with installed distributed generators including the calculation of the reliability indices of the system. The results show the accurate and effectiveness of used method for reliability evaluation with voltage violations Liu and Singh.…”

Section: Figure 1 Electrical Power System Hierarchical Levels Diagrammentioning

confidence: 99%

“…The sum of all individual probabilities is equal one as shown in (12) as Markov theory assumption. Based on that assumption, In (11) must be replaced to (13) [3].…”

Section: Transition Markov Equationmentioning

confidence: 99%

Reliability assessment for electrical power generation system based on advanced Markov process combined with blocks diagram

Tawfiq¹,

el-Raouf

Elgawad

et al. 2021

IJECE

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This paper presents the power generation system reliability assessment using an advanced Markov process combined with blocks diagram technique. The effectiveness of the suggested methodology is based on HL-I of IEEE_EPS_24_bus. The proposed method achieved the generation reliability and availability of an electrical power system using the Markov chain which based on the operational transition from state to state which represented in matrix. The proposed methodology has been presented for reliability performance evaluation of IEEE_EPS_24_bus. MATLAB code is developed using Markov chain construction. The transition between probability states is represented using changing the failure and repair rates. The reduced number of generation system are used with Markov process to assess the availability, unavailability, and reliability for the generation system. Additionally, the proposed technique calculates the frequency, time duration of states, the probability of generation capacity state which get out of service or remained in service for each state of failure, and reliability indices. A considerable improvement in reliability indices is found with using blocks diagram technique which is used to reduce the infinity number of transition states and assess the system reliability. The proposed technique succeeded at achieving accurate and faster reliability for the power system.

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